MR imaging and cranial ultrasound data and findings at presentation
| No. | Percentage | ||
|---|---|---|---|
| Imaging data | |||
| MR imaging and US | 7 | ||
| MR imaging only | 8 | ||
| US only | 1 | ||
| Age at imaging (range) (day) | |||
| MR imaging | 3.2 (1–9) | ||
| US | 2.7 (1–7) | ||
| MR imaging field strength (1.5T:3T) | 12:3 | ||
| MR imaging sequences | |||
| Core sequencesa | 15/15 | ||
| GRE T2*WI | 11/15 | ||
| SWI | 4/15 | ||
| MRV performed | |||
| On initial MRI | 10/15 | ||
| On repeat MRI within 4 days | 3/15 | ||
| MRA performed | |||
| On initial MRI | 9/15 | ||
| On repeat MRI within 6 weeks | 3/15 | ||
| Lesion laterality (right:left) | 10:6 | 62%:38% | |
| Lesion location | |||
| Temporal | 11/16 | 69% | |
| Frontal | 3/16 | 19% | |
| Parietal | 1/16 | 6% | |
| Occipital | 1/16 | 6% | |
| Parenchymal diffusion restriction | 15/15 | 100% | |
| Parenchymal hemorrhage | 11/15 | 50% | |
| Intraventricular hemorrhage | 3/15 | 18% | |
| Midline shift | 8/15 | 50% | |
| Yin-yang sign on MRI | 15/15 | 100% | |
| Yin-yang sign on US | 6/6 | 100% |
Note:—US indicates ultrasound.
↵a The core MR images include sagittal and axial T1WI, axial and coronal FSE T2WI, and axial and coronal DWI.